unix-privesc-check/lib/misc/process

#!/bin/sh
# $Revision: 297 $
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#
# (c) Tim Brown, 2012
# <mailto:timb@nth-dimension.org.uk>
# <http://www.nth-dimension.org.uk/> / <http://www.machine.org.uk/>
#
# Supports: Linux

if [ -z "${processincluded}" ]
then

processincluded=1

. lib/misc/parse
. lib/misc/validate

process_list () {
	pattern="${1}"
	[ "`validate_is_string \"${pattern}\"`" ] || false
	ps -aeo ruser,rgroup,pid,ppid,args | grep -v "PID" | grep "${pattern}" | grep -v "grep" | while read userid groupid processid parentid command arguments
	do
		printf -- "${processid}\n"
	done
}

process_show_userid () {
	pattern="${1}"
	[ "`validate_is_number \"${pattern}\"`" ] || false
	ps -aeo ruser,rgroup,pid,ppid,args | grep -v "PID" | grep "${pattern}" | grep -v "grep" | while read userid groupid processid parentid command arguments
	do
		if [ "${processid}" -eq "${pattern}" ]
		then
			printf -- "${userid}\n"
		fi
	done
}

process_show_parentid () {
	pattern="${1}"
	[ "`validate_is_number \"${pattern}\"`" ] || false
	ps -aeo ruser,rgroup,pid,ppid,args | grep -v "PID" | grep "${pattern}" | grep -v "grep" | while read userid groupid processid parentid command arguments
	do
		if [ "${processid}" -eq "${pattern}" ]
		then
			printf -- "${parentid}\n"
		fi
	done
}

process_show_command () {
	pattern="${1}"
	[ "`validate_is_number \"${pattern}\"`" ] || false
	ps -aeo ruser,rgroup,pid,ppid,args | grep -v "PID" | grep "${pattern}" | grep -v "grep" | while read userid groupid processid parentid command argument _
	do
		if [ "${processid}" -eq "${pattern}" ]
		then
			if [ -n "`printf -- \"${command}\" | egrep -- \"awk|ruby|python|perl|/sh|bash|dash|ksh|csh|expect\"`" ]
			then
				case "${argument}" in
					/*)
						printf -- "${argument}\n"
						;;
					# for cases where the script has been executed following a cd into its parent path it will show in the ps output as follows:
					#	foobar foobar  pid  ppid /bin/sh ./scriptname.sh
					./*)
						filepath="`parse_environ_cwd \"${processid}\"`"
						if [ -n "${filepath}" ]
						then
							# the cut is to strip the './' as filepath is the absolute path
							printf -- "${filepath}/`printf -- \"${argument}\" | cut -c3-`\n"
						fi
						;;
				esac
			else
				printf -- "${command}\n"
			fi
		fi
	done
}

fi